Honestly I dont see how the hood could warp. The struts merely just give the hood something to lean on. The only stress on the outside of teh hood comes from the raising/lowering of the hood. And it moves very freely. It's not like I'm forcing it down or up. It moves on it's own almost.
There are many other vehicles out there with factory hood struts of the same type. They don't see warpage so I think this is a big myth.
But again, I don't have physical proof, but the physics just aren't there to put that kind of strain on the hood.